// trackaxisDlg.cpp : implementation file
//
#include "stdafx.h"
#include "trackaxis.h"
#include "trackaxisDlg.h"
#include "chartdir.h"
#include <sstream>
#include <algorithm>
using namespace std;
#ifdef _DEBUG
#define new DEBUG_NEW
#endif
// CtrackaxisDlg dialog
CtrackaxisDlg::CtrackaxisDlg(CWnd* pParent /*=NULL*/)
: CDialog(CtrackaxisDlg::IDD, pParent)
{
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
CtrackaxisDlg::~CtrackaxisDlg()
{
delete m_ChartViewer.getChart();
}
void CtrackaxisDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
DDX_Control(pDX, IDC_ChartViewer, m_ChartViewer);
}
BEGIN_MESSAGE_MAP(CtrackaxisDlg, CDialog)
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_WM_ERASEBKGND()
ON_CONTROL(CVN_MouseMovePlotArea, IDC_ChartViewer, OnMouseMovePlotArea)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
// CtrackaxisDlg message handlers
BOOL CtrackaxisDlg::OnInitDialog()
{
CDialog::OnInitDialog();
// Set the icon for this dialog. The framework does this automatically
// when the application's main window is not a dialog
SetIcon(m_hIcon, TRUE); // Set big icon
SetIcon(m_hIcon, FALSE); // Set small icon
drawChart(&m_ChartViewer);
CRect winSize;
m_ChartViewer.GetWindowRect(winSize);
m_ChartViewer.MoveWindow(5, 5, winSize.Width(), winSize.Height());
CalcWindowRect(&winSize, CWnd::adjustBorder);
SetWindowPos(&wndTop, 0, 0, winSize.Width() + 10, winSize.Height() + 10, SWP_NOMOVE);
return TRUE; // return TRUE unless you set the focus to a control
}
// If you add a minimize button to your dialog, you will need the code below
// to draw the icon. For MFC applications using the document/view model,
// this is automatically done for you by the framework.
void CtrackaxisDlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // device context for painting
SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);
// Center icon in client rectangle
int cxIcon = GetSystemMetrics(SM_CXICON);
int cyIcon = GetSystemMetrics(SM_CYICON);
CRect rect;
GetClientRect(&rect);
int x = (rect.Width() - cxIcon + 1) / 2;
int y = (rect.Height() - cyIcon + 1) / 2;
// Draw the icon
dc.DrawIcon(x, y, m_hIcon);
}
else
{
CDialog::OnPaint();
}
}
// The system calls this function to obtain the cursor to display while the user drags
// the minimized window.
HCURSOR CtrackaxisDlg::OnQueryDragIcon()
{
return static_cast<HCURSOR>(m_hIcon);
}
//
// Handle the ON_WM_ERASEBKGND message to set background color
//
BOOL CtrackaxisDlg::OnEraseBkgnd(CDC* pDC)
{
// Set brush to desired background color
CBrush backBrush(RGB(255, 255, 255));
// Save old brush
CBrush* pOldBrush = pDC->SelectObject(&backBrush);
// Erase the area needed with the given background color
CRect rect;
pDC->GetClipBox(&rect);
pDC->PatBlt(rect.left, rect.top, rect.Width(), rect.Height(), PATCOPY);
// Restore old brush and exit
pDC->SelectObject(pOldBrush);
return TRUE;
}
//
// Draw track cursor when mouse is moving over plotarea
//
void CtrackaxisDlg::OnMouseMovePlotArea()
{
trackLineAxis((XYChart *)m_ChartViewer.getChart(), m_ChartViewer.getPlotAreaMouseX());
m_ChartViewer.updateDisplay();
// Hide the track cursor when the mouse leaves the plot area
m_ChartViewer.removeDynamicLayer(CVN_MouseLeavePlotArea);
}
/////////////////////////////////////////////////////////////////////////////
// CtrackaxisDlg methods
//
// Draw the chart and display it in the given viewer
//
void CtrackaxisDlg::drawChart(CChartViewer *viewer)
{
// Data for the chart as 2 random data series
RanSeries r(127);
DoubleArray data0 = r.getSeries(180, 10, -1.5, 1.5);
DoubleArray data1 = r.getSeries(180, 150, -15, 15);
DoubleArray timeStamps = r.getDateSeries(180, Chart::chartTime(2011, 1, 1), 86400);
// Create a XYChart object of size 670 x 400 pixels
XYChart *c = new XYChart(670, 400);
// Add a title to the chart using 18 pts Times New Roman Bold Italic font
c->addTitle("Plasma Stabilizer Energy Usage", "timesbi.ttf", 18);
// Set the plotarea at (50, 55) with width 100 pixels less than chart width, and height 90 pixels
// less than chart height. Use a vertical gradient from light blue (f0f6ff) to sky blue (a0c0ff)
// as background. Set border to transparent and grid lines to white (ffffff).
c->setPlotArea(50, 55, c->getWidth() - 100, c->getHeight() - 90, c->linearGradientColor(0, 55, 0,
c->getHeight() - 35, 0xf0f6ff, 0xa0c0ff), -1, Chart::Transparent, 0xffffff, 0xffffff);
// Add a legend box at (50, 25) using horizontal layout. Use 10pts Arial Bold as font. Set the
// background and border color to Transparent.
c->addLegend(50, 25, false, "arialbd.ttf", 10)->setBackground(Chart::Transparent);
// Set axis label style to 8pts Arial Bold
c->xAxis()->setLabelStyle("arialbd.ttf", 8);
c->yAxis()->setLabelStyle("arialbd.ttf", 8);
c->yAxis2()->setLabelStyle("arialbd.ttf", 8);
// Set the axis stem to transparent
c->xAxis()->setColors(Chart::Transparent);
c->yAxis()->setColors(Chart::Transparent);
c->yAxis2()->setColors(Chart::Transparent);
// Configure x-axis label format
c->xAxis()->setMultiFormat(Chart::StartOfYearFilter(), "{value|mm/yyyy} ",
Chart::StartOfMonthFilter(), "{value|mm}");
// Add axis title using 10pts Arial Bold Italic font
c->yAxis()->setTitle("Power Usage (Watt)", "arialbi.ttf", 10);
c->yAxis2()->setTitle("Effective Load (kg)", "arialbi.ttf", 10);
// Add a line layer to the chart using a line width of 2 pixels.
LineLayer *layer = c->addLineLayer();
layer->setLineWidth(2);
// Add 2 data series to the line layer
layer->setXData(timeStamps);
layer->addDataSet(data0, 0xcc0000, "Power Usage");
layer->addDataSet(data1, 0x008800, "Effective Load")->setUseYAxis2();
// Assign the chart to the WinChartViewer
viewer->setChart(c);
}
//
// Draw track line with axis labels
//
void CtrackaxisDlg::trackLineAxis(XYChart *c, int mouseX)
{
// Clear the current dynamic layer and get the DrawArea object to draw on it.
DrawArea *d = c->initDynamicLayer();
// The plot area object
PlotArea *plotArea = c->getPlotArea();
// Get the data x-value that is nearest to the mouse, and find its pixel coordinate.
double xValue = c->getNearestXValue(mouseX);
int xCoor = c->getXCoor(xValue);
// The vertical track line is drawn up to the highest data point (the point with smallest
// y-coordinate). We need to iterate all datasets in all layers to determine where it is.
int minY = plotArea->getBottomY();
// Iterate through all layers to find the highest data point
for(int i = 0; i < c->getLayerCount(); ++i) {
Layer *layer = c->getLayerByZ(i);
// The data array index of the x-value
int xIndex = layer->getXIndexOf(xValue);
// Iterate through all the data sets in the layer
for(int j = 0; j < layer->getDataSetCount(); ++j) {
DataSet *dataSet = layer->getDataSetByZ(j);
double dataPoint = dataSet->getPosition(xIndex);
if ((dataPoint != Chart::NoValue) && (dataSet->getDataColor() != Chart::Transparent)) {
minY = min(minY, c->getYCoor(dataPoint, dataSet->getUseYAxis()));
}
}
}
// Draw a vertical track line at the x-position up to the highest data point.
d->vline(max(minY, plotArea->getTopY()), plotArea->getBottomY() + 6, xCoor, d->dashLineColor(
0x000000, 0x0101));
// Draw a label on the x-axis to show the track line position
ostringstream xlabel;
xlabel << "<*font,bgColor=000000*> " << c->xAxis()->getFormattedLabel(xValue, "mmm dd, yyyy")
<< " <*/font*>";
TTFText *t = d->text(xlabel.str().c_str(), "arialbd.ttf", 8);
t->draw(xCoor, plotArea->getBottomY() + 6, 0xffffff, Chart::Top);
t->destroy();
// Iterate through all layers to build the legend array
for(int i = 0; i < c->getLayerCount(); ++i) {
Layer *layer = c->getLayerByZ(i);
// The data array index of the x-value
int xIndex = layer->getXIndexOf(xValue);
// Iterate through all the data sets in the layer
for(int j = 0; j < layer->getDataSetCount(); ++j) {
DataSet *dataSet = layer->getDataSetByZ(j);
// The positional value, axis binding, pixel coordinate and color of the data point.
double dataPoint = dataSet->getPosition(xIndex);
Axis *yAxis = dataSet->getUseYAxis();
int yCoor = c->getYCoor(dataPoint, yAxis);
int color = dataSet->getDataColor();
// Draw the axis label only for visible data points of named data sets
if ((dataPoint != Chart::NoValue) && (color != Chart::Transparent) && (yCoor >=
plotArea->getTopY()) && (yCoor <= plotArea->getBottomY())) {
// The axis label consists of 3 parts - a track dot for the data point, an axis label,
// and a line joining the track dot to the axis label.
// Draw the line first. The end point of the line at the axis label side depends on
// whether the label is at the left or right side of the axis (that is, on whether the
// axis is on the left or right side of the plot area).
int xPos = yAxis->getX() + ((yAxis->getAlignment() == Chart::Left) ? -4 : 4);
d->hline(xCoor, xPos, yCoor, d->dashLineColor(color, 0x0101));
// Draw the track dot
d->circle(xCoor, yCoor, 4, 4, color, color);
// Draw the axis label. If the axis is on the left side of the plot area, the labels
// should right aligned to the axis, and vice versa.
ostringstream axisLabel;
axisLabel << "<*font,bgColor=" << hex << color << "*> "
<< c->formatValue(dataPoint, "{value|P4}") << " <*/font*>";
t = d->text(axisLabel.str().c_str(), "arialbd.ttf", 8);
t->draw(xPos, yCoor, 0xffffff,
((yAxis->getAlignment() == Chart::Left) ? Chart::Right : Chart::Left));
t->destroy();
}
}
}
} |